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rzuastiandClaude Opus 4.8
98b5fa267f
Introduce a headless `flutter test` suite (83 tests) covering models, utilities, every API endpoint, and the five screens, with shared helpers and fixtures so new tests stay terse. API endpoint methods are statically-dispatched extensions on the BackendAPI singleton, so they cannot be mocked via `implements`. Mock at the Dio HTTP-adapter layer (http_mock_adapter) instead, enabled by two small @visibleForTesting seams: BackendAPI.dioForTesting swaps the singleton's Dio, and BackendReachability.forceOnlineForTesting() forces a deterministic online state so polling widgets load. Add frontend/run_tests.sh and document it in CLAUDE.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
68 lines
2.5 KiB
Dart
68 lines
2.5 KiB
Dart
import 'package:dio/dio.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:frontend/utils/backend_reachability.dart';
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import 'package:frontend/utils/oott_api.dart';
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import 'package:frontend/utils/pref_utils.dart';
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import 'package:http_mock_adapter/http_mock_adapter.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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const _connectivityMethodChannel = MethodChannel(
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'dev.fluttercommunity.plus/connectivity',
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);
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const _connectivityEventChannel = EventChannel(
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'dev.fluttercommunity.plus/connectivity_status',
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);
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bool _channelsStubbed = false;
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/// Neutralises the connectivity_plus platform channels so the
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/// [BackendReachability] singleton can be constructed in tests without the
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/// plugin throwing `MissingPluginException`. `check` reports a network, and
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/// the change stream stays open but emits nothing.
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void _stubConnectivityChannels() {
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if (_channelsStubbed) return;
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final messenger =
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TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;
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messenger.setMockMethodCallHandler(_connectivityMethodChannel, (call) async {
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if (call.method == 'check') return <String>['wifi'];
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return null;
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});
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messenger.setMockStreamHandler(
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_connectivityEventChannel,
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MockStreamHandler.inline(onListen: (arguments, events) {}),
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);
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_channelsStubbed = true;
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}
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/// Prepares the backend singletons for a test and returns a [DioAdapter] so the
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/// test can stub HTTP routes. Call from `setUp`.
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///
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/// This (1) seeds mock SharedPreferences, (2) stubs the connectivity channels,
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/// (3) forces [BackendReachability] online so polling widgets load, and
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/// (4) swaps the [BackendAPI] singleton's Dio for one backed by a mock adapter.
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///
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/// `prefs` are only honoured on the first call within a test isolate, because
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/// `PrefUtil` caches the SharedPreferences instance after its one-shot init.
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/// Use [PrefUtil.setValue] for per-test changes after that.
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Future<DioAdapter> setUpBackendForTest({
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Map<String, Object> prefs = const {},
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}) async {
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TestWidgetsFlutterBinding.ensureInitialized();
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_stubConnectivityChannels();
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SharedPreferences.setMockInitialValues({
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'base_url': 'http://test.local/api',
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'api_key': '',
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...prefs,
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});
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await PrefUtil.init();
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BackendReachability.instance.forceOnlineForTesting();
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final dio = Dio(BaseOptions(baseUrl: 'http://test.local/api'));
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final adapter = DioAdapter(dio: dio);
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BackendAPI.instance.dioForTesting = dio;
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return adapter;
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}
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